Prolapse

Okay, I am selling a bunch of my things, I don't know what to do, I saw the chicken chicks posts and I asked around but how do I push it back in properly? I don't want to hurt her, I would do anything for her to live and live without hurting, I'm probably going to take her in to stop her from laying forever :c she's my favorite pet and she means the world to me, any advice or knowledge helps
She is eating medicated feed and electrolytes have been added to her water and the feed store said for my flock to add sulmet and wazine as well, because I just got a flock from my uncle who were not very healthy, and they all needed wormed but anyways, yeah